New Insights into Photochromic Properties of N-Salicylideneaniline Derivatives Using a Cocrystal Engineering Approach

Gabriel M. Mercier, Koen Robeyns, Nikolay Tumanov, Benoit Champagne, Johan Wouters, Tom Leyssens

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

In this contribution, we aim to modify the photochromic properties of anils using a crystal engineering approach. Previous work has shown cocrystallization to alter the photochromic behavior of anils. Here, a full screening of 15 anil derivatives (including 8 newly described anils) with 21 coformers (carboxylic acids, amides, and halogenated benzene derivatives) was performed, resulting in 89 new anil cocrystals. This large amount of results allows drawing statistically valid insights on the complex photochromic mechanism providing evidence of a continuous phenomenon instead of the classic binary photochromic/nonphotochromic one. This is supported by the discovery of “weakly photochromic compounds” presented in this contribution. All the results allowed confirming that an enol-imine character is a requirement and that reducing the amount of short contacts involving the moieties of interest is an interesting way to fine-tune properties as this acts on both electronic and structural aspects. Following this “continuous hypothesis”, the role of the dihedral angle has been explored and shown to be related to the intensity of photochromism instead of being determinant for its occurrence. In addition, in this contribution, we present a novel way of interpreting DRS (diffuse reflectance spectroscopy) data.
langue originaleAnglais
Pages (de - à)5544-5556
Nombre de pages13
journalCrystal Growth & Design
Volume19
Numéro de publication10
Les DOIs
étatPublié - 2 oct. 2019

Empreinte digitale

Drawing (graphics)
Benzene Derivatives
Crystal engineering
Photochromism
Imines
Dihedral angle
Carboxylic Acids
Amides
Screening
Spectroscopy
engineering
Derivatives
photochromism
Carboxylic acids
determinants
carboxylic acids
imines
amides
dihedral angle
Benzene

Citer ceci

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title = "New Insights into Photochromic Properties of N-Salicylideneaniline Derivatives Using a Cocrystal Engineering Approach",
abstract = "In this contribution, we aim to modify the photochromic properties of anils using a crystal engineering approach. Previous work has shown cocrystallization to alter the photochromic behavior of anils. Here, a full screening of 15 anil derivatives (including 8 newly described anils) with 21 coformers (carboxylic acids, amides, and halogenated benzene derivatives) was performed, resulting in 89 new anil cocrystals. This large amount of results allows drawing statistically valid insights on the complex photochromic mechanism providing evidence of a continuous phenomenon instead of the classic binary photochromic/nonphotochromic one. This is supported by the discovery of “weakly photochromic compounds” presented in this contribution. All the results allowed confirming that an enol-imine character is a requirement and that reducing the amount of short contacts involving the moieties of interest is an interesting way to fine-tune properties as this acts on both electronic and structural aspects. Following this “continuous hypothesis”, the role of the dihedral angle has been explored and shown to be related to the intensity of photochromism instead of being determinant for its occurrence. In addition, in this contribution, we present a novel way of interpreting DRS (diffuse reflectance spectroscopy) data.",
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New Insights into Photochromic Properties of N-Salicylideneaniline Derivatives Using a Cocrystal Engineering Approach. / Mercier, Gabriel M.; Robeyns, Koen; Tumanov, Nikolay; Champagne, Benoit; Wouters, Johan; Leyssens, Tom.

Dans: Crystal Growth & Design, Vol 19, Numéro 10, 02.10.2019, p. 5544-5556.

Résultats de recherche: Contribution à un journal/une revueArticle

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AU - Champagne, Benoit

AU - Wouters, Johan

AU - Leyssens, Tom

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